Dorsal Induction
- 3rd week: neural plate is formed
- 4th week: neural plate wraps around neural tube (process called neurulation)
- 6th week: ends of neural tube close
- Brain and spinal cord will develop out of the neural tube
Neural Tube Defects:
- Involves failure of neural tube ends to close
- Encephalocele: when part of the brain protrudes from the skull
- Anencephaly: brain development ceases at brainstem; child without cerebral hemispheres; child without cerebral hemispheres
- Spina Bifida: cyst on back that may or may not involve the spinal cord
